Information

FTM counter
channel (n) output
(before fault control)
FAULTIN bit
channel (n) output
(after fault control with
manual fault clearing
and POLn=0)
the beginning of new PWM cycles
FAULTF bit
FAULTF bit is cleared
The channel (n) output is after the fault control with manual fault clearing and POLn = 0.
NOTE
Figure 35-195. Fault control with manual fault clearing
35.4.16.3 Fault inputs polarity control
The FLTjPOL bit selects the fault input j polarity, where j = 0, 1, 2, 3:
• If FLTjPOL = 0, the fault j input polarity is high, so the logical one at the fault input j
indicates a fault.
• If FLTjPOL = 1, the fault j input polarity is low, so the logical zero at the fault input j
indicates a fault.
35.4.17 Polarity control
The POLn bit selects the channel (n) output polarity:
• If POLn = 0, the channel (n) output polarity is high, so the logical one is the active
state and the logical zero is the inactive state.
• If POLn = 1, the channel (n) output polarity is low, so the logical zero is the active
state and the logical one is the inactive state.
Chapter 35 FlexTimer Module (FTM)
K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
Freescale Semiconductor, Inc. 793